From 213cacefcd5c7815802281445ba503d26e794b77 Mon Sep 17 00:00:00 2001 From: Xiangliang Yu Date: Fri, 21 Apr 2017 14:01:29 +0800 Subject: drm/amdgpu/virt: bypass cg and pg setting for SRIOV GPU hypervisor cover all settings of CG and PG, so guest doesn't need to do anything. Bypass it. Signed-off-by: Frank Min Signed-off-by: Xiangliang Yu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index 6bf5cea294f2..bd422f04f2ce 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -105,6 +105,8 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev) /* enable virtual display */ adev->mode_info.num_crtc = 1; adev->enable_virtual_display = true; + adev->cg_flags = 0; + adev->pg_flags = 0; mutex_init(&adev->virt.lock_kiq); mutex_init(&adev->virt.lock_reset); -- cgit v1.2.3 From cdf6adb28f79e728389b2e1a5e524504ce710eb6 Mon Sep 17 00:00:00 2001 From: Shaoyun Liu Date: Fri, 28 Apr 2017 17:18:26 -0400 Subject: drm/amdgpu: Move kiq ring lock out of virt structure The usage of kiq should not depend on the virtualization. Signed-off-by: Shaoyun Liu Reviewed-by:Andres Rodriquez Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 9 ++++----- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h | 1 - drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 2 ++ drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 2 ++ 5 files changed, 9 insertions(+), 6 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 3608f165a705..8edc26c3ce64 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -907,6 +907,7 @@ struct amdgpu_mec { struct amdgpu_kiq { u64 eop_gpu_addr; struct amdgpu_bo *eop_obj; + struct mutex ring_mutex; struct amdgpu_ring ring; struct amdgpu_irq_src irq; }; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index bd422f04f2ce..61fcf264c247 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -108,7 +108,6 @@ void amdgpu_virt_init_setting(struct amdgpu_device *adev) adev->cg_flags = 0; adev->pg_flags = 0; - mutex_init(&adev->virt.lock_kiq); mutex_init(&adev->virt.lock_reset); } @@ -122,12 +121,12 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg) BUG_ON(!ring->funcs->emit_rreg); - mutex_lock(&adev->virt.lock_kiq); + mutex_lock(&kiq->ring_mutex); amdgpu_ring_alloc(ring, 32); amdgpu_ring_emit_rreg(ring, reg); amdgpu_fence_emit(ring, &f); amdgpu_ring_commit(ring); - mutex_unlock(&adev->virt.lock_kiq); + mutex_unlock(&kiq->ring_mutex); r = dma_fence_wait(f, false); if (r) @@ -148,12 +147,12 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v) BUG_ON(!ring->funcs->emit_wreg); - mutex_lock(&adev->virt.lock_kiq); + mutex_lock(&kiq->ring_mutex); amdgpu_ring_alloc(ring, 32); amdgpu_ring_emit_wreg(ring, reg, v); amdgpu_fence_emit(ring, &f); amdgpu_ring_commit(ring); - mutex_unlock(&adev->virt.lock_kiq); + mutex_unlock(&kiq->ring_mutex); r = dma_fence_wait(f, false); if (r) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h index a8ed162cc0bc..6f2b7dfd237e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.h @@ -52,7 +52,6 @@ struct amdgpu_virt { uint64_t csa_vmid0_addr; bool chained_ib_support; uint32_t reg_val_offs; - struct mutex lock_kiq; struct mutex lock_reset; struct amdgpu_irq_src ack_irq; struct amdgpu_irq_src rcv_irq; diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index b92d5f1657c5..700188a65ae4 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -1385,6 +1385,8 @@ static int gfx_v8_0_kiq_init_ring(struct amdgpu_device *adev, struct amdgpu_kiq *kiq = &adev->gfx.kiq; int r = 0; + mutex_init(&kiq->ring_mutex); + r = amdgpu_wb_get(adev, &adev->virt.reg_val_offs); if (r) return r; diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c index 978841792001..14f88672de84 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c @@ -614,6 +614,8 @@ static int gfx_v9_0_kiq_init_ring(struct amdgpu_device *adev, struct amdgpu_kiq *kiq = &adev->gfx.kiq; int r = 0; + mutex_init(&kiq->ring_mutex); + r = amdgpu_wb_get(adev, &adev->virt.reg_val_offs); if (r) return r; -- cgit v1.2.3 From ff82577a10f405e9e0426facdbdd303143146d9f Mon Sep 17 00:00:00 2001 From: Monk Liu Date: Fri, 5 May 2017 17:30:50 -0400 Subject: drm/amdgpu:kiq reg access need timeout(v2) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit this is to prevent fence forever waiting if FLR occured during register accessing. v2: use define instead of hardcode for the timeout msec Signed-off-by: Monk Liu Reviewed-by: Christian König Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index 61fcf264c247..8a081e162d13 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -22,6 +22,7 @@ */ #include "amdgpu.h" +#define MAX_KIQ_REG_WAIT 100000 int amdgpu_allocate_static_csa(struct amdgpu_device *adev) { @@ -128,10 +129,12 @@ uint32_t amdgpu_virt_kiq_rreg(struct amdgpu_device *adev, uint32_t reg) amdgpu_ring_commit(ring); mutex_unlock(&kiq->ring_mutex); - r = dma_fence_wait(f, false); - if (r) - DRM_ERROR("wait for kiq fence error: %ld.\n", r); + r = dma_fence_wait_timeout(f, false, msecs_to_jiffies(MAX_KIQ_REG_WAIT)); dma_fence_put(f); + if (r < 1) { + DRM_ERROR("wait for kiq fence error: %ld.\n", r); + return ~0; + } val = adev->wb.wb[adev->virt.reg_val_offs]; @@ -154,8 +157,8 @@ void amdgpu_virt_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v) amdgpu_ring_commit(ring); mutex_unlock(&kiq->ring_mutex); - r = dma_fence_wait(f, false); - if (r) + r = dma_fence_wait_timeout(f, false, msecs_to_jiffies(MAX_KIQ_REG_WAIT)); + if (r < 1) DRM_ERROR("wait for kiq fence error: %ld.\n", r); dma_fence_put(f); } -- cgit v1.2.3